GainWire Mk3 CFA pre/phone amp with very low distortion

[dadod]

Damir:

Looks good!

I don't recall seeing what you finally decided to use for volume control?

mlloyd1

mlloyd1, look my previous answer.
Damir

 

[dadod]

Now after two years passed since the boards have been delivered to the ones who ordered it I would like to have some comments about build and listening.

I hope there are people with finished GW mk3, please tell me your opinion.
Damir

 

[platon.rado]

New PCB.Sound fantastic. Thanks Damir. Stereo Digital Volume Control CS3310.

 

[dadod]

Hi Radoslav,
So you designed your own PCBs?
I'm glad you like it.
Damir

 

[platon.rado]

The PCB was suggested to me by a friend.For personal use only. preamplifier works in class A ???
Thanks Damir

 

[thimios]

Very nice work!
Is this board in the right a dac?
Where you got?

 

[dadod]

The PCB was suggested to me by a friend.For personal use only. preamplifier works in class A ???
Thanks Damir

Yes Class A.

 

[platon.rado]

,Volume control, Thanks thimios

 

[bogdan_borko]

Any data of real measurements?

 

[thimios]

,Volume control, Thanks thimios

Volume control and source selector.
Where you bought this?

 

[vasillis]

Thimio the link for the selector
AIYIMA VFD Screen Remote Control Digital Volume Control Board HiFi Preamplifier 4 Way Audio Sswitching Power Amplifier AC12V| | - AliExpress

 

[dadod]

From the last PCB order I still have two spare boards, and if there is still someone interested.

The price per board is 19 Eur plus shipping.

Attached the photo schematics and BOM

 

[vac231]

Hi all,


This preamp is first class and I warmly recommend it. I use the previous version mkii with great satisfaction while I'm planning to build the latest version too when my schedule allows it.


After that build, you won't need to spend more time researching on transistorized preamplification and you'll definitely focus on other part of your system.


Thanks again, Dadod, for this work. Music is alive again!



Nicola

 

[dadod]

Thanks Nicola,

This one is very similar to mk2 just with more powerful output and better drive for low impedance headphones, and it's only CFA with very very low distortion on all audio frequencies.

Damir

 

[dadod]

One PCB sold, still one to sell if there is interested.

 

[dadod]

Why are you polluting this thread?

 

[dadod]

Still one PCB (stereo) available.

 

[dadod]

It passed more than one year from last post here.
Because there was some interest in the PCB for this pre/headphone amp I will ordered some more of it, quantity depens of interest.
There is a new improved layout revision 1.5.
Please put your order here if you are interested.
Damir

 

[dadod]

It looks there are no interested?

 

[potepuh]

Hello Dadod


The price for a board is:

Thanks